Examples with OperatorSubtaskState org.apache.flink.runtime.checkpoint.OperatorSubtaskState used on opensource projects

Example 86 with OperatorSubtaskState

use of org.apache.flink.runtime.checkpoint.OperatorSubtaskState in project beam by apache.

the class DoFnOperatorTest method testExactlyOnceBufferingKeyed.

@Test
public void testExactlyOnceBufferingKeyed() throws Exception {
    FlinkPipelineOptions options = FlinkPipelineOptions.defaults();
    options.setMaxBundleSize(2L);
    options.setCheckpointingInterval(1L);
    TupleTag<KV<String, String>> outputTag = new TupleTag<>("main-output");
    StringUtf8Coder keyCoder = StringUtf8Coder.of();
    KvToByteBufferKeySelector<String, String> keySelector = new KvToByteBufferKeySelector<>(keyCoder, new SerializablePipelineOptions(options));
    KvCoder<String, String> kvCoder = KvCoder.of(keyCoder, StringUtf8Coder.of());
    WindowedValue.ValueOnlyWindowedValueCoder<KV<String, String>> windowedValueCoder = WindowedValue.getValueOnlyCoder(kvCoder);
    DoFn<KV<String, String>, KV<String, String>> doFn = new DoFn<KV<String, String>, KV<String, String>>() {

        @StartBundle
        public void startBundle() {
            numStartBundleCalled++;
        }

        @ProcessElement
        // Use RequiresStableInput to force buffering elements
        @RequiresStableInput
        public void processElement(ProcessContext context) {
            context.output(context.element());
        }

        @FinishBundle
        public void finishBundle(FinishBundleContext context) {
            context.output(KV.of("key3", "finishBundle"), BoundedWindow.TIMESTAMP_MIN_VALUE, GlobalWindow.INSTANCE);
        }
    };
    DoFnOperator.MultiOutputOutputManagerFactory<KV<String, String>> outputManagerFactory = new DoFnOperator.MultiOutputOutputManagerFactory<>(outputTag, WindowedValue.getFullCoder(kvCoder, GlobalWindow.Coder.INSTANCE), new SerializablePipelineOptions(options));
    Supplier<DoFnOperator<KV<String, String>, KV<String, String>>> doFnOperatorSupplier = () -> new DoFnOperator<>(doFn, "stepName", windowedValueCoder, Collections.emptyMap(), outputTag, Collections.emptyList(), outputManagerFactory, WindowingStrategy.globalDefault(), new HashMap<>(), /* side-input mapping */
    Collections.emptyList(), /* side inputs */
    options, keyCoder, keySelector, DoFnSchemaInformation.create(), Collections.emptyMap());
    DoFnOperator<KV<String, String>, KV<String, String>> doFnOperator = doFnOperatorSupplier.get();
    OneInputStreamOperatorTestHarness<WindowedValue<KV<String, String>>, WindowedValue<KV<String, String>>> testHarness = new KeyedOneInputStreamOperatorTestHarness<>(doFnOperator, keySelector, keySelector.getProducedType());
    testHarness.open();
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("key", "a"))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("key", "b"))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("key2", "c"))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("key2", "d"))));
    assertThat(Iterables.size(testHarness.getOutput()), is(0));
    OperatorSubtaskState backup = testHarness.snapshot(0, 0);
    doFnOperator.notifyCheckpointComplete(0L);
    assertThat(numStartBundleCalled, is(1));
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.valueInGlobalWindow(KV.of("key", "a")), WindowedValue.valueInGlobalWindow(KV.of("key", "b")), WindowedValue.valueInGlobalWindow(KV.of("key2", "c")), WindowedValue.valueInGlobalWindow(KV.of("key2", "d")), WindowedValue.valueInGlobalWindow(KV.of("key3", "finishBundle"))));
    doFnOperator = doFnOperatorSupplier.get();
    testHarness = new KeyedOneInputStreamOperatorTestHarness<>(doFnOperator, keySelector, keySelector.getProducedType());
    // restore from the snapshot
    testHarness.initializeState(backup);
    testHarness.open();
    doFnOperator.notifyCheckpointComplete(0L);
    assertThat(numStartBundleCalled, is(2));
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.valueInGlobalWindow(KV.of("key", "a")), WindowedValue.valueInGlobalWindow(KV.of("key", "b")), WindowedValue.valueInGlobalWindow(KV.of("key2", "c")), WindowedValue.valueInGlobalWindow(KV.of("key2", "d")), WindowedValue.valueInGlobalWindow(KV.of("key3", "finishBundle"))));
    // repeat to see if elements are evicted
    doFnOperator.notifyCheckpointComplete(1L);
    assertThat(numStartBundleCalled, is(2));
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.valueInGlobalWindow(KV.of("key", "a")), WindowedValue.valueInGlobalWindow(KV.of("key", "b")), WindowedValue.valueInGlobalWindow(KV.of("key2", "c")), WindowedValue.valueInGlobalWindow(KV.of("key2", "d")), WindowedValue.valueInGlobalWindow(KV.of("key3", "finishBundle"))));
}

Example 87 with OperatorSubtaskState

use of org.apache.flink.runtime.checkpoint.OperatorSubtaskState in project beam by apache.

the class DoFnOperatorTest method testStateRestore.

@Test
public void testStateRestore() throws Exception {
    DoFn<KV<String, Long>, KV<String, Long>> filterElementsEqualToCountFn = new DoFn<KV<String, Long>, KV<String, Long>>() {

        @StateId("counter")
        private final StateSpec<ValueState<Long>> counterSpec = StateSpecs.value(VarLongCoder.of());

        @ProcessElement
        public void processElement(ProcessContext context, @StateId("counter") ValueState<Long> count) {
            long currentCount = Optional.ofNullable(count.read()).orElse(0L);
            currentCount = currentCount + 1;
            count.write(currentCount);
            KV<String, Long> currentElement = context.element();
            if (currentCount == currentElement.getValue()) {
                context.output(currentElement);
            }
        }
    };
    WindowingStrategy<Object, GlobalWindow> windowingStrategy = WindowingStrategy.globalDefault();
    TupleTag<KV<String, Long>> outputTag = new TupleTag<>("main-output");
    StringUtf8Coder keyCoder = StringUtf8Coder.of();
    KvToByteBufferKeySelector<String, Long> keySelector = new KvToByteBufferKeySelector<>(keyCoder, null);
    KvCoder<String, Long> coder = KvCoder.of(keyCoder, VarLongCoder.of());
    FullWindowedValueCoder<KV<String, Long>> kvCoder = WindowedValue.getFullCoder(coder, windowingStrategy.getWindowFn().windowCoder());
    CoderTypeInformation<ByteBuffer> keyCoderInfo = new CoderTypeInformation<>(FlinkKeyUtils.ByteBufferCoder.of(), FlinkPipelineOptions.defaults());
    OneInputStreamOperatorTestHarness<WindowedValue<KV<String, Long>>, WindowedValue<KV<String, Long>>> testHarness = createTestHarness(windowingStrategy, filterElementsEqualToCountFn, kvCoder, kvCoder, keyCoder, outputTag, keyCoderInfo, keySelector);
    testHarness.open();
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("a", 100L))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("a", 100L))));
    OperatorSubtaskState snapshot = testHarness.snapshot(0, 0);
    testHarness.close();
    testHarness = createTestHarness(windowingStrategy, filterElementsEqualToCountFn, kvCoder, kvCoder, keyCoder, outputTag, keyCoderInfo, keySelector);
    testHarness.initializeState(snapshot);
    testHarness.open();
    // after restore: counter = 2
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("a", 100L))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("a", 4L))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("a", 5L))));
    testHarness.processElement(new StreamRecord<>(WindowedValue.valueInGlobalWindow(KV.of("a", 100L))));
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.valueInGlobalWindow(KV.of("a", 4L)), WindowedValue.valueInGlobalWindow(KV.of("a", 5L))));
    testHarness.close();
}

Example 88 with OperatorSubtaskState

use of org.apache.flink.runtime.checkpoint.OperatorSubtaskState in project beam by apache.

the class DoFnOperatorTest method testTimersRestore.

@Test
public void testTimersRestore() throws Exception {
    final Instant timerTimestamp = new Instant(1000);
    final String outputMessage = "Timer fired";
    WindowingStrategy<Object, IntervalWindow> windowingStrategy = WindowingStrategy.of(FixedWindows.of(Duration.millis(10_000)));
    DoFn<Integer, String> fn = new DoFn<Integer, String>() {

        private static final String EVENT_TIMER_ID = "eventTimer";

        @TimerId(EVENT_TIMER_ID)
        private final TimerSpec eventTimer = TimerSpecs.timer(TimeDomain.EVENT_TIME);

        @ProcessElement
        public void processElement(ProcessContext context, @TimerId(EVENT_TIMER_ID) Timer timer) {
            timer.set(timerTimestamp);
        }

        @OnTimer(EVENT_TIMER_ID)
        public void onEventTime(OnTimerContext context) {
            assertEquals("Timer timestamp must match set timestamp.", timerTimestamp, context.timestamp());
            context.outputWithTimestamp(outputMessage, context.timestamp());
        }
    };
    VarIntCoder keyCoder = VarIntCoder.of();
    WindowedValue.FullWindowedValueCoder<Integer> inputCoder = WindowedValue.getFullCoder(keyCoder, windowingStrategy.getWindowFn().windowCoder());
    WindowedValue.FullWindowedValueCoder<String> outputCoder = WindowedValue.getFullCoder(StringUtf8Coder.of(), windowingStrategy.getWindowFn().windowCoder());
    TupleTag<String> outputTag = new TupleTag<>("main-output");
    final CoderTypeSerializer<WindowedValue<String>> outputSerializer = new CoderTypeSerializer<>(outputCoder, new SerializablePipelineOptions(FlinkPipelineOptions.defaults()));
    CoderTypeInformation<ByteBuffer> keyCoderInfo = new CoderTypeInformation<>(FlinkKeyUtils.ByteBufferCoder.of(), FlinkPipelineOptions.defaults());
    KeySelector<WindowedValue<Integer>, ByteBuffer> keySelector = e -> FlinkKeyUtils.encodeKey(e.getValue(), keyCoder);
    OneInputStreamOperatorTestHarness<WindowedValue<Integer>, WindowedValue<String>> testHarness = createTestHarness(windowingStrategy, fn, inputCoder, outputCoder, keyCoder, outputTag, keyCoderInfo, keySelector);
    testHarness.setup(outputSerializer);
    testHarness.open();
    testHarness.processWatermark(0);
    IntervalWindow window1 = new IntervalWindow(new Instant(0), Duration.millis(10_000));
    // this should register a timer
    testHarness.processElement(new StreamRecord<>(WindowedValue.of(13, new Instant(0), window1, PaneInfo.NO_FIRING)));
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), emptyIterable());
    // snapshot and restore
    final OperatorSubtaskState snapshot = testHarness.snapshot(0, 0);
    testHarness.close();
    testHarness = createTestHarness(windowingStrategy, fn, inputCoder, outputCoder, VarIntCoder.of(), outputTag, keyCoderInfo, keySelector);
    testHarness.setup(outputSerializer);
    testHarness.initializeState(snapshot);
    testHarness.open();
    // this must fire the timer
    testHarness.processWatermark(timerTimestamp.getMillis() + 1);
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.of(outputMessage, timerTimestamp, window1, PaneInfo.NO_FIRING)));
    testHarness.close();
}

Example 89 with OperatorSubtaskState

use of org.apache.flink.runtime.checkpoint.OperatorSubtaskState in project beam by apache.

the class DoFnOperatorTest method pushbackDataCheckpointing.

void pushbackDataCheckpointing(TestHarnessFactory<TwoInputStreamOperatorTestHarness<WindowedValue<String>, RawUnionValue, WindowedValue<String>>> harnessFactory) throws Exception {
    TwoInputStreamOperatorTestHarness<WindowedValue<String>, RawUnionValue, WindowedValue<String>> testHarness = harnessFactory.create();
    testHarness.open();
    IntervalWindow firstWindow = new IntervalWindow(new Instant(0), new Instant(100));
    IntervalWindow secondWindow = new IntervalWindow(new Instant(0), new Instant(500));
    // push in main-input elements
    WindowedValue<String> helloElement = valueInWindow("Hello", new Instant(0), firstWindow);
    WindowedValue<String> worldElement = valueInWindow("World", new Instant(1000), firstWindow);
    testHarness.processElement1(new StreamRecord<>(helloElement));
    testHarness.processElement1(new StreamRecord<>(worldElement));
    // snapshot state, throw away the operator, then restore and verify that we still match
    // main-input elements to the side-inputs that we sent earlier
    OperatorSubtaskState snapshot = testHarness.snapshot(0, 0);
    testHarness = harnessFactory.create();
    testHarness.initializeState(snapshot);
    testHarness.open();
    // push in some side inputs for both windows
    testHarness.processElement2(new StreamRecord<>(new RawUnionValue(1, valuesInWindow(PCollectionViewTesting.materializeValuesFor(view1.getPipeline().getOptions(), View.asIterable(), "hello", "ciao"), new Instant(0), firstWindow))));
    testHarness.processElement2(new StreamRecord<>(new RawUnionValue(2, valuesInWindow(PCollectionViewTesting.materializeValuesFor(view2.getPipeline().getOptions(), View.asIterable(), "foo", "bar"), new Instant(0), secondWindow))));
    assertThat(stripStreamRecordFromWindowedValue(testHarness.getOutput()), containsInAnyOrder(helloElement, worldElement));
    testHarness.close();
}

Example 90 with OperatorSubtaskState

use of org.apache.flink.runtime.checkpoint.OperatorSubtaskState in project flink by apache.

the class KafkaMigrationTestBase method initializeTestState.

private OperatorSubtaskState initializeTestState() throws Exception {
    try (OneInputStreamOperatorTestHarness testHarness = createTestHarness()) {
        testHarness.setup();
        testHarness.open();
        // Create a committed transaction
        testHarness.processElement(42, 0L);
        // TODO: when stop with savepoint is available, replace this code with it (with stop
        // with savepoint
        // there won't be any pending transactions)
        OperatorSubtaskState snapshot = testHarness.snapshot(0L, 1L);
        // We kind of simulate stop with savepoint by making sure that
        // notifyOfCompletedCheckpoint is called
        testHarness.notifyOfCompletedCheckpoint(0L);
        // Create a Pending transaction
        testHarness.processElement(43, 2L);
        return snapshot;
    }
}